Bin-ventilator.



M. RUURKE.

BIN VENTILATOR.

APPLICATION min Jun: 9. 1917.

Patented July 16, 1918.

attozwu ivrioHAnL nounxr.; or WINDSOR, ONTARIO, CANADA.

' BINLVENTILATOR.

Levassa ToaZZ/whomz'tmag/ concern',k y

Y Be it known thatI I, MICHAEL ROURKE, a citizen of theDominionofCanada, and residing zit-Windsor, yin, the Vcounty of Essex andProvince ofOntario, Canada, have inv vented a .newqand `ImprovedBin-Ventilator, Ofwhich the following is a s pecic'ation.

It has been proposedi to ventilate grain in binsby various constructionswhich required the use of an air pump or other means for .creatingpressureY or sufction whereby air was either forced or sucked throughthe bin in quantities.v suflicient 'to'. absorb'. 1 moisture f andprevent'heating-#because of expenseand'f'.-

for other reasons these devices have not gone into wide commercial use.It, has also been proposed to insert into the bins from .aboveperforated'metal shells having pointed ends, but these devices have beendiscarded becauserthey failed to providey av sufficiently rapidinterchange of air and because such moisture as condensed on the shellsmerely found its Way back into the grain.

To the end of overcoming the Objections stated, the present inventionconsists in a double tubular construction arranged to be set up over ahole in thel floor Oftheloin and to form both an inner ingress passagean an outer ingress passage for the air current,

theV walls of theinner passage being ar' ranged to act asian elementupon which a Y portion of the moisture carried bythe air current maycondense and from which it may drip'without again coming' in contactwith the grain. The device is inexpensive, may be may be readilymanufac- Y tured from stock materials in sizes suitable ing opening mays be left partly. open 5()l for the various installations, land performsits functions admirably.

In the drawing, Figure 1 is a vertical section Vthrough a bin equippedwithone einbodiinent of the'invention. Fig. f2 is a secl tion on theline 2-2 of Fig. 1.l

The bin, which is of the ordinary type, has a floor l, vsides?,l throughone of'which an opening for filling purposes, and the top 3. rThefill;-` Y beclosed entirely or may to afford communication with otherportions of the granary or buildl Ying of which the bin is a part.

`Y.The floor is provide'dwith one or more openingsv that are adapted'toreceive the lower, end offan outer perforated metal tube or screen .5'(the' apertures being lsmall rounding said (not: shown) may be providedu 4 Specification Of Letters Patent. 'Patented July 16, 1918.Application filed .Tune 9, 19137'. Y Serial No. 173,960. I

which extendsto a higher. level than it is intended to fill the bin andwhich has its Weight carried on a` suitable collar 6, another functionof tlievlatter being to seal the yjoint between the element 5 and thefloor. VCO-axial with the screen is a sheet metal tube 7 of the samelength whichV is supported thereon by a suitable cross-bar 8. Insteadofthe tube 7,.a central sheet metal diaphragm Yextending longitudinallyof the screen. might .be employed, but the construction shown isstronger, cheaper and per formsits .functions better.

....'In operation, supposing the grain to be moist and heated, the airbetween the screen and the tube 7 becomes heated and rises while acolder (due to the fact it does not come in contact with or in closerelation to Vthe heated grain) rising current is simultaneously set upin the interior of the tube. The latter, being relatively cold,condenses flow down and drip from the end of the tube tothe ground.

The details of construction may be varied within wide limits withoutdeparting from the spirit of the invention, and I do not, therefore,wish to be limited except as indicated by the subjoined claims.

1.l A grain bin having a hole in its bottom, a tubular foraminouselement surhole and extending upwardly therefrom, a pipe of lesserdiameter arranged within the tubular element and substantiallyconcentrically therewith, the lower edge of the pipe being spaced fromthe edge ofthe hole, wherebyv an upward current of warm moist air is setup in the annular `space surrounding the pipe, and whereby moisturecondensing on the outer surface of the tube may drip through the hole inthe bottom without coming into Contact with the grain.

2. Abin having a hole in its bottom', and a' screen surrounding saidhole and extending upwardly therefrom, apipe inclosed by from the wallof the hole, whereby an upa wardrcurrent of relatively warm air is setup inthelspace between the pipe and the screen and an upward current ofrelatively enoughy to rprevent passage of the grain) cool air is setupwithin the pipe. and whereby moisure condensing on the pipe may 4drip Ythrough the hole in the bottom without coming' into contact with thegrain.

3. A bin having a hole in its bottom, and

a screen in sealing engagement with the` therefrom, a tubularmemberfinclosed the screen,V said member" being' of lesser` di- Copiesofthis patent may be obtained `for ameter than the screen, and a crossbarvhavlng' its ends received m the wallsof the five cents each, byaddressingv the commissioner `of Jlatents,

l Washington, 1)03@ I Y 1, 1

screen, said tubular member being' support- Qd by the cross bar.

5. A binhaving' a hole in its bottom, and means 'extending' upwardlyfrom said hole to a point above the upper level of the contents oithebin, said means including' an outer screen member, the lower end ofwhich 1s in sealed'eng'agement with the edge of the opening' in theVbottom, anda tubular in.-V i

ner metallic member spaced lfrom said outer;

member and substantially co extensive' therewith, whereby air may enterthe bin through the space between'the members and may escape through theinterior'of the inner member and whereby moisture condensing' on theinner member may drip through the holein the bottom without coming intocontact 'with the grain.

vMioiIAEL HOUR-KE. y' 'i

